Question

0,7b=1, 8/19x=8/19, 12/5y=12/5. Помогите пожалуйста

Answer 1

0,7б=1
7б=10
б=10/7
б=1 3/7

8/19х=8/19
8*19=8*19х
19=19х
х=19/19
х=1

12/5у=12/5
12*5=5у*12
5=5у
у=5/5
у=1

Answer 2

0,7b = 1
b = 1 : 0,7
b = 1 : 7/10
b = 10/7
b = 1целая 3/7
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8/19х = 8/19
х = 8/19 : 8/19
х = 1
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12/5у = 12/5
у = 12/5 : 12/5
у = 1